Hi,everyone

     I have question for seting boundary conditions

At first, this is my model

         According to the example,i know set the boundary conditions in inlet and outlet

this fan 3600rpm,0.17cmm,83Pa=8.3mmaq(static pressure), i set (outlet pressure is biger than inlet)

         But the result is wrong,

frome this result,we can see that,the air is from outlet into fan,it is impossible,is i need to set outlet pressure small than inlet??

I see the teaching video,it teaching must set from my original set

please help me ,what should i do

this is my e-mail:jack77823@gmail.com

thanks